Turbine-pump.



F.`vv. KROGH. TUHBINE PUMP.

APPLICATION FILED JyLY6'19H. Y

' Patented A111113, 1915.

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INVENTQIR Patented Apr. 13 1915.

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FERDINAND W. KROGH, 0F SAN' FRANCISCO, CALIFORNIA.

TURBINE-P'UMP.

To all whom it may concern Be itknown that I, FERDINAND W. KROGH, California, have invented useful Improvements in. whereof the following is a certain new and Turbine-Pumps, specification. y

My present invention relates to turbine pumps in general and more particularly to that class of pumps which are intended to be submerged or placed below the iiuid level of the well or cistern in which the same may be applied and consists in the arrangement and construction of pressure stagings with pressure regulating means in the impellers of each stage.

'Ihe object of my a centrifugal pump, the impeller of which motion with an angle equal to the angle at in contact with the for discharge of iiuid which the fluid comes imparting surface.

Another object of my invention is to provide a centrifugal pump in which the impeller is balanced in the fluid without thrust bearings and maintains comparatively a' steady position by regulating means therein'.

In the accompanying two sheets of drawings, I have illustrated the novel arrangeparts by which I accomplish my purpose in which, l

Figure 1, is a sectional elevation of my pump showing two pressure sta es subvmerged in a well below the liquid level; Fig.

2, is a cross section taken on the line A B, of Fig. 1, showing the outlet ports and vacuum chamber looking in the direction of the arrows. Fig. 3, is another cross section taken on the line C D, of Fig. 1, showing the curve of the discharge vanes'. discharging into the common chamber, looking in the direction of the arrows. Fig. 4:, is also another cross sectional view taken from Fig. 1, on the line E F, showing the construction of the impellers. Fig. 5, is a section taken through one of the pressure ports showing the Vanes therein.v

Similar characters of' reference denote similar parts throughout the several views of the drawings.

Now describinor my invention in detail, 1 is the casing ofE my pump of which there may be a plurality of stagings as shown 1n Fig. 1, connected together by cap screws 2 and 2'; 3 is the driving shaft extending throughout the length of the well or cistern inside the discharge pipe 4; at 5 isshown invention is to providev .10 close entirely7` able Specification of Letters Patent. Patenililedl pll. 13, 1915. Application filed July 6, 1911. Serial No. 637,165. i i i the curvature of the Yanes formed on the inner portion of the casing, there may be any number of these vanes quirements to which the pumps shall be sub- 6 and i are inlet ports connecting the varies 5 with a pressure chamber 47 in the interior portion of a revolvin impeller 8 located on the shaft 3 under t e casing 1. The hub of the impeller is equipped with a cutoff 9 for opening and closing the ports 6 and 6.

10 an(t 16 are outlet ports from the chamber 7 adapted to be opened and closed by a circular extension of the casin'g; ll is a cushion chamber under the impeller and in thebase of the 'casing 1 having also a communicating passage 12 between the impeller and casing.

The mode of operation of my invention is as follows r-The shaft 3 is set in motion by any particular source ofl power which revolves the impeller S in the direction of the arrow Fig. t, creating a suction for the fluid and drawinv the same around the surface of the impelIer ports in tlrel x'direction of the arrow, and discharging the same to the next area above through the v`horizontal Vanesa in the form of the tractrix shown in Figs. l and 3.

It will be noted that when the impeller 8 is standing still the shoulder 13 will rest on the circular projection 14 of the casing 1 at the same time the ports 10`and 10 in *he periphery of the impeller will be opened and the ports 6 and 6 between the hub of the as may suit the reimpeller and the inneripart of the casing closed by the cut-0H 9, butas soon as the impeller starts to move and rise by the ressure in the cushion chamber 11 or rom other source, said ports 10 and 10 begin t0 close by the circular extension l5 of the casing and the ports 6 and 6 will begin to open until theimpeller nds its own..equi librinm, should however, the ports 10 and as shown in Fig. 1 that will create a pressure in the chamber 27 force the impeller to til the ports 6 and 6 close and the ports 10 and 10 open and again. the impeller finds its equilibrium. Thus in this manner I am to control the balancing of the impeller to a great degree of eliiciency without mechanical appliances...v

shown. meansUfor revolving' one evleazlre'iiilgi and move downwardly unf o It will bel further noted that whileI hara*-y against the regular surface of another2 I do not desire to limit myself to that particular showing, as I am aware many modifications i of the same, without departing from the merged lin fluid as I am aware said stages may be withinfthe ranges of suction limitation to accomplish the same result.

ff fr Havingthusdescribed my invention and vbelieving I have produced novel and useful 'f improvements in that class off-apparatus,

what I claim and desire to secure by Letters Patent of'theUnited States is In combination with the casing and the impeller therein of a turbine pump, a presjff, sure chamber in said impeller, an inlet in "20 j said casingabove said chamber ada ted to create a downward pressure in said c amber vand means to close saidinlet. '2. In combinationwith'theeasing and thev impeller therein of a turbine pump, a pres'- sure chamber. in said impeller, an inlet in said casing, and an outlet' in said chamber communicating with said'inlet, meansv on said casing to close or open said outlet,and

means on said impeller to close or open said inlet. h i

f 3. In combination with the casing andthe impellertherein of a turbine pump,\longitudinal passages in said 4casing adjacent to Said jmpeller, a downward pressure chainb ber insaid impeller, an inlet in `said easing' :zjicommunicating with said chamberadapted 'to be closed by said inipeller, an outletfin 4said chamber communicatintr with saidpafsf gages and an inwardlycircu ar extension on' L said casing proJeetJIlig .1u said chamber fand provided with an outlet, sai

vadapted to close said outlet when said mpeller moves upward.

4:. In combination with the movable and stationary parts of a turbine pump, a chamber inthe movable part having an outlet, and aninlet in the stationary part projecting inwardly in said chamber and adapted to create a downward pressure therein and automatic means to close and open said outlet? and inlet alternately and thereby regulating the pressure in the chamber.

5. In combination with the casing and the impeller ofa turbine pump, a receiving chamber in saidcasing provided with an inlet, apressure chamber in said impeller provided with an outlet communicating with said inlet and automatic means to close or opensaid inlet and outlet.

6. `In ,combination with the casing and the impeller of a turbine-pump, a receiving chamber in said easing provided with an` inlet, a pressure 'chamber in said limpeller provided with an outlet and respective.

means on said casing and impeller tov close alternately said inlet and outlet. l.

7. In' combination with the casing and the impcller of a turbine pump, a receiving chamber in said casing provided with an "inlet, 'a pressure chamber 1n said impeller chamber, inlet and outlet being adapted to be closed or opened by the tmovement of said imp ller. In testimony that I 'claim the 'foregoing I have hereto set my hand this 26th day of June, 1911, in the presence of witnesses. n Y l FERDINAND W. KROGH.- .itnessesz BLANCHE C. Cns'rnn,

" Essm' V. KNAcKsTED'n communicating with vsaid receivin 

